.detail-goods {
    width: 100%;
    height: 100%;
    position: relative;
}

.goods-img {
    width: 100%;
    height: auto;
}

.add-shopcart {
    width: 100%;
    height: .8rem;
    position: absolute;
    left: 0;
    bottom: 0;
    border-top: 1px solid #ddd;
    display: flex;
    justify-content: space-between;
    align-items: center;
}